Social Reformer. He was involved in the Easter 1916 Uprising in Dublin, and signed the Irish Republic Proclamation, which was read on the steps of the General Post Office on Sackville Street. He was court martialled under the "Defence of The Realms Acts", and was sentenced to death. He and his fellow signers were then shot in the former stone-breakers' yard at Kilmainham Jail, Dublin.

As he prepared to lead out his men at St Stephen’s Green, Mallin, father to four young children and husband to a pregnant wife, said: “We will be dead in a short time.”-
Green HobbitAdded: May. 8, 2015